Lena and Boris Vyazemsky are ready to sell their family business, get a divorce, and move on as quickly as possible. But their children have very different plans: Milana and Elisey turn to Grisha and his team to save the family. Now the rich kids will be re-educated in the era of Peter the Great: sea adventures and dangers will force them to rethink their own past and realize that nothing is more important than family.